Cedar Glen Unit 2 Dam is an other dam located in Will County, Illinois, built in 1985. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 460 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Cedar Glen Unit 2 Dam
The primary purpose of Cedar Glen Unit 2 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by City of Naperville (private). It impounds the Spring Brook near Romeoville.
The dam stands 11 feet tall and stretches 460 feet across, and has a maximum storage capacity of 75 acre-feet. Completed in 1985, the structure is 41 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 09/15/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | Will |
| Nearest City | Romeoville |
| River/Stream | Spring Brook |
| Coordinates | 41.72209, -88.16235 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 460 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Max Discharge | 965 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of Naperville |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/15/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50058 |
| Federal ID | IL50058 |
| More Info | State Dam Safety Program |